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•FAIN-26170 / FAOD-26171
FAIN-35170 / FAOD-35171
•
FRESH AIR SERIES
CONTENTS
SAFETY PRECAUTIONS
NAME OF PARTS
REMOTE CONTROL
OPERATION INSTRUCTIONS
INSTRUCTIONS FOR SERVICING(R32)
INSTALLATION PRECAUTIONS
INDOOR UNIT INSTALLATION
OUTDOOR UNIT INSTALLATION
TEST OPERATION
MAINTENANCE
TROUBLESHOOTING
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............................................................................................................14
...........................................................................................................................6
* The design and specifications are subject to change without prior notice for product improvement.
Consult with the sales agency or manufacturer for details.
* The shape and position of buttons and indicators may vary according to the model, but their function
are the same.
Accessories
Indoor Unit
Outdoor Unit
Remote
controller
AAA battery Screw User manual Fresh air filter
Extension
Joint
Metal strap
supporter
Plastic
anchors
Through-wall
pipe assembly
Drainage hose Sealant
Insulation
pipe
Drainage joint
(some models do
not have)
Adapters
Insulating
tape
X 2
X 2 X 6
X 6
X 2
X 4
Refrigerant pipe
nuts(optional)
Fresh air
pipe
X 2
X 2
Wall sleeve cover
(optional)
X 2
1
1. Read this guide before installing and using the appliance.
2. During the installation of the indoor and outdoor units, access to the working area should be
forbidden to children. Unforeseeable accidents could happen.
3. Make sure that the base of the outdoor unit is firmly fixed.
4. Check that air cannot enter the refrigerant system and check for refrigerant leaks when moving
the air conditioner.
5. Carry out a test cycle after installing the air conditioner and record the operating data.
6. Protect the indoor unit with a fuse of suitable capacity for the maximum input current or with
another overload protection device.
7. Ensure that the mains voltage corresponds to that stamped on the rating plate. Keep the switch
or power plug clean. Insert the power plug correctly and firmly into the socket, thereby avoiding
the risk of electric shock or fire due to insufficient contact.
8. Check that the socket is suitable for the plug , otherwise have the socket changed.
9. The appliance must be fitted with means for disconnection from the supply mains having a
contact separation in all poles that provide full disconnection under over voltage category III
conditions, and these means must be incorporated in the fixed wiring in accordance with the
wiring rules.
10. The air conditioner must be installed by professional or qualified persons.
11. Do not install the appliance at a distance of less than 50 cm from inflammable substances
(alcohol, etc.) Or from pressurized containers (e.g. spray cans).
12. If the appliance is used in areas without the possibility of ventilation, precautions must be taken
to prevent any leaks of refrigerant gas from remaining in the environment and creating a danger
of fire.
13. The packaging materials are recyclable and should be disposed of in the separate waste bins.
Take the air conditioner at the end of its useful life to a special waste collection center for disposal.
14. Only use the air conditioner as instructed in this booklet. These instructions are not intended to
cover every possible condition and situation. As with any electrical household appliance, common
sense and caution are therefore always recommended for installation, operation and maintenance.
15. The appliance must be installed in accordance with applicable national regulations.
16. Before accessing the terminals, all the power circuits must be disconnected from the power supply.
17. The appliance shall be installed in accordance with national wiring regulations.
18. This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance
shall not be made by children without supervision.
SAFETY RULES AND RECOMMENDATIONS FOR THE INSTALLER
SAFETY PRECAUTIONS
19. Do not try to install the conditioner alone, always contact specialized technical personnel.
20. Cleaning and maintenance must be carried out by specialized technical personnel. In any case
disconnect the appliance from the mains electricity supply before carrying out any cleaning or
maintenance.
21. Ensure that the mains voltage corresponds to that stamped on the rating plate. Keep the switch
or power plug clean. Insert the power plug correctly and firmly into the socket, thereby avoiding
the risk of electric shock or fire due to insufficient contact.
22. Do not pull out the plug to switch off the appliance when it is in operation, since this could create
a spark and cause a fire, etc.
23. This appliance has been made for air conditioning domestic environments and must not be used
for any other purpose, such as for drying clothes, cooling food, etc.
24. Always use the appliance with the air filter mounted. The use of the conditioner without air filter
could cause an excessive accumulation of dust or waste on the inner parts of the device with
possible subsequent failures.
25. The user is responsible for having the appliance installed by a qualified technician, who must
check that it is earth in accordance with current legislation and insert a thermos magnetic circuit
breaker.
26. The batteries in the remote controller must be recycled or disposed of properly. For disposal of
scrap batteries, please discard the batteries as sorted municipal waste at the accessible collection
point.
27. Never remain directly exposed to the flow of cold air for a long time. The direct and prolonged
exposition to cold air could be dangerous for your health. Particular care should be taken in the
rooms where there are children, old or sick people.
28. If the appliance gives off smoke or there is a smell of burning, immediately cut off the power
supply and contact the Service Center.
29. The prolonged use of the device in such conditions could cause fire or electrocution.
30. Have repairs carried out only by an authorised Service Centra of the manufacturer. Incorrect
repair could expose the user to the risk of electric shock, etc.
31. Unhook the automatic switch if you foresee not to use the device for a long time. The airflow
direction must be properly adjusted.
32. The flaps must be directed downwards in the heating mode and upwards in the cooling mode.
33. Ensure that the appliance is disconnected from the power supply when it will remain inoperative
for a long period and before carrying out any cleaning or maintenance.
34. Selecting the most suitable temperature can prevent damage to the appliance.
2
SAFETY RULES AND RECOMMENDATIONS FOR THE INSTALLER
SAFETY PRECAUTIONS
1. Do not bend, tug or compress the power cord since this could damage it. Electrical shocks or fire
are probably due to a damaged power cord. Specialized technical personnel only must replace a
damaged power cord.
2. Do not use extensions or gang modules.
3. Do not touch the appliance when barefoot or parts of the body are wet or damp.
4. Do not obstruct the air inlet or outlet of the indoor or the outdoor unit. The obstruction of these
openings causes a reduction in the operative efficiency of the conditioner with possible consequent
failures or damages.
5. In no way alter the characteristics of the appliance.
6. Do not install the appliance in environments where the air could contain gas, oil or sulphur or near
sources of heat.
7. This appliance is not intended for use by persons (including children ) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a person responsible for their safety.
8. Do not climb onto or place any heavy or hot objects on top of the appliance.
9. Do not leave windows or doors open for long when the air conditioner is operating.
10. Do not direct the airflow onto plants or animals.
11. A long direct exposition to the flow of cold air of the conditioner could have negative effects on
plants and animals.
12. Do not put the conditioner in contact with water. The electrical insulation could be damaged and
thus causing electrocution.
13. Do not climb onto or place any objects on the outdoor unit.
14. Never insert a stick or similar object into the appliance. It could cause injury.
15. Children should be supervised to ensure that they do not play with the appliance. If the supply
cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
3
SAFETY RULES AND PROHIBITIONS
SAFETY PRECAUTIONS
Indoor Unit
Note: This figure shown may be different from the actual object. Please take the latter as the
standard.
With the protective cover removed
Liquid valve
(High pressure valve)
Gas valve
(Low pressure valve)
4
NAME OF PARTS
Mounting plate
Air filter
Outdoor Unit
Front panel
Air deflector and flap
Air outlet
Refrigerant
connecting pipe
Air inlet
Drainage pipe
Air outlet
Connection wiring
Valve protective cover
Indoor Display
The shape and position of switches and indicators may be different according to the model,
but their function is the same.
1
2
3
Indicator for Timer, temperature and Error codes.
Lights up when Fresh Air function is on.
Operation indicator/Air quality status indicator (if TVOC function
is available).
5
NAME OF PARTS
4
Lights up when Wi-Fi is on.
1
2
3
4
Note:
The air conditioner automatically adjusts the display brightness and buzzer sound according to the
ambient light intensity. When the air conditioner detects that the ambient light is weak for a period
of time, it will automatically turns off the display temporarily. If there is a remote control or APP
operation, the display will display at a low brightness for a short time, and the buzzer will respond at
a lower volume; When the air conditioner detects that the ambient light is strong for a period of time,
exit the above operation.
REMOTE CONTROL
6
Remote control DISPLAY
The display and some functions of the remote control may vary according to the model.
Symbols
Cooling Mode
Dry Mode
Fan only Mode
Heating Mode
Fan speed:
Auto/ low/ low-mid/ mid/ mid-high/ high
TURBO function
Mute function
Up-down auto swing
Temperature indicator
Meaning
Left-right auto swing
SLEEP function
Timer
Battery indicator
Auto Mode
Health function
I FEEL function
ECO Mode
8 heating function
oC
Signal indicator
Gentle wind
Child-Lock
Display ON/OFF
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Anti-Mildew
Self-Clean function
GEN function
26
Fresh air
REMOTE CONTROL
7
The shape and position of buttons and indicators may vary according to the model, but their
function is the same.
The display and some functions of the remote control may vary according to the model.
The unit confirms the correct reception of each button with the beep.
No.
Button Function
To select the mode of operation (AUTO, COOL, DRY, FAN, HEAT).
To activate/deactivate the TURBO function.
To decrease temperature, or Timer setting hours.
To increase temperature, or Timer setting hours.
To turn on/off the air conditioner .
To select the fan speed of auto/mute/low/low-mid/mid/mid-high/high/turbo.
8
11
6
7
9
MODE
TURBO
1
2
3
4
FAN
5
To activate/deactivate the ECO function.
ECO
To set the time for timer on/off.
TIMER
To switch-on/off the function SLEEP.
SLEEP
10
To switch-on/off the LED display.
DISPLAY
To stop or start horizontal louver movement or set the desired up/down air flow direction.
12
13
To switch-on/off the I FEEL function.
I FEEL
14
To switch-on/off the MUTE function.
MUTE
Long press to activate/deactivate the GEN function (depending on models).
To stop or start horizontal louver movement or set the desired left/rightair flow direction.
15
16
To activate/deactivate the CHILD-LOCK function.
MODE + TIMER
17
To activate/deactivate the SELF-CLEAN function when switch OFF.
18
To activate/deactivate the GENTLE WIND function (depending on models).
To activate/deactivate the HEALTH function (depending on models).
HEALTH
Long press to activate/deactivate the 8 heating function (depending on models).
oC
To activate/deactivate the Fresh Air function and select the fan speed.
FRESH AIR
GENTLE WIND
REMOTE CONTROL
8
Replacement of Batteries
Remove the battery cover plate from the rear of the remote control, by sliding it in direction as
the arrow.
Install the batteries according the direction (+ and -)shown on the Remote Control.
Reinstall the battery cover by sliding it into place.
Use 2 pieces LRO3 AAA (1.5V) batteries.
Do not use rechargeable batteries.
Replace the old batteries with new ones of the same
type when the display is no longer legible.
Do not dispose batteries as unsorted municipal waste.
Collection of such waste separately for special
treatment is necessary.
Note:
1. Direct the remote control toward the Air conditioner.
2. Check that there are no objects between the remote control and the Signal receptor in the
indoor unit.
3. Never leave the remote control exposed to the rays of the sun.
4. Keep the remote control at a distance of at least 1m from the television or other electrical
appliances.
For some models of the remote controller, you can program the temperature display between
o o
C and F.
1. Press and hold the TURBO button over 5 seconds to get into the change mode;
o o
2. Press and hold the TURBO button, until it switch to C and F;
3. Then release the pressing and wait for 5 seconds, the function will be selected.
9
REMOTE CONTROL
COOLING MODE HEATING MODE
The cooling function allows the air
conditioner to cool the room and
reduce Air humidity at the same
time.
HEAT
The heating function allows the air
conditioner to heat the room.
To activate the cooling function (COOL), press the
MODE button until the symbol appears on
the display.
With the button or set a temperature lower
than that of the room.
To activate the heating function (HEAT), press the
MODE button until the symbol appears on the
display.
With the button or set a temperature higher
than that of the room.
In HEATING operation, the appliance can
automatically activate a defrost cycle, which
is essential to clean the frost on the condenser
so as to recover its heat exchange function.
This procedure usually lasts for 2-10 minutes.
During defrosting, indoor unit fan stop
operation. After defrosting, it resumes to
HEATING mode automatically.
COOL
(For North American market)
If necessary, you can press ECO button 10
times within 8 seconds under heating mode
to start the forced defrosting. It will defrost
the outdoor ice much faster.
DRY MODE
This function reduces the humidity
of the air to make the room more
comfortable.
DRY
To set the DRY mode, Press MODE until
appears in the display. An automatic function of
pre-setting is activated.
FAN MODE (Not FAN button)
FAN Fan mode, air ventilation only.
To set the FAN mode, press MODE until
appears on the display.
AUTO MODE
Automatic mode.
AUTO
To set the AUTO mode, press MODE until
appears on the display.
In AUTO mode the run mode will be set
automatically according to the room temperature.
FAN SPEED function (FAN button)
FAN Change the operating fan speed.
Press FAN button to set the running fan speed,
it can be set to AUTO/ MUTE/ LOW/ LOW-MID
/ MID/ MID-HIGH/ HIGH/ TURBO speed circularly.
Child-Lock function
1. Long press MODE and TIMER button together
to active this function, and do it again to
deactivate this function.
2. Under this function, no single button will active.
(Flash)
10
REMOTE CONTROL
To automatic switch on the
appliance.
TIMER function ---- TIMER OFF
To automatic switch off the
appliance.
When the unit is switch-off, you can set the
TIMER ON.
To set the time of automatic switch-on as below:
When the unit is switch-on, you can set the
TIMER OFF.
To set the time of automatic switch-off, as below:
1. Confirm the appliance is ON.
2. Press the TIMER button at first time to set the
switch-off.
Press or to set the needed timer.
3. Press TIMER button at the second time to
confirm.
CANCEL it by press TIMER button.
Note: All programming should be operated within
5 seconds, otherwise the setting will be
cancelled.
TIMER
TIMER
TURBO function
TURBO
To activate turbo function, press the TURBO
button, and will appear on the display.
Press again to cancel this function.
In COOL/ HEAT mode, when you select TURBO
feature, the appliance will turn to quick COOL or
quick HEAT mode, and operate the highest fan
speed to blow strong airflow.
TIMER function ---- TIMER ON SWING function
1. Press TIMER button first time to set
the switch-on, and will appear on the
remote display and flashes.
2. Press or to button to set desired Timer-on
time. Each time you press the button, the time
increases/decreases by half an hour between 0
and 10 hours and by one between 10 and 24
hours.
3. Press TIMER button second time to confirm.
4. After Timer-on setting, set the needed mode
(Cool/ Heat/ Auto/ Fan/ Dry), by press the
MODE button. And set the needed fan speed,
by press FAN button. And press or to set
the needed operation temperature.
CANCEL it by press TIMER button.
Never positionFlapsmanually, the delicate
mechanism might seriously damaged!
Never put fingers, sticks or other objects into
the air inlet or outlet vents. Such accidental
contact with live parts might cause
unforeseeable damage or injury.
1. Press the button SWING to activate the louver,
1.1 Press to activate the horizontal flaps
to swing from up to down, the will appear
on the remote display.
1.2 Press to active the vertical deflectors
to swing from left to right, the will appear
on the remote display.
1.3 Do it again to stop the swing movement at
the current angle.
2. If the vertical deflectors are positioned manually
which placed under the flaps, they allow to move
the air flow direct to rightward or leftward.
3.Long press or over 3 seconds to select
more angles of the airflow direction.
11
REMOTE CONTROL
MUTE function ECO function
MUTE
1. Press MUTE button to active this function,
and will appears on the remote display.
Do it again to deactivate this function.
2. When the MUTE function runs, the remote
controller will display the auto fan speed, and
the indoor unit will operate at lowest fan
speed to be quiet feeling.
3. When press FAN/ TURBO/ SLEEP button, the
MUTE function will be cancel. MUTE function
can not be activated under dry mode.
I FEEL function (Optional)
Press I FEEL button to active the function, the
will appear on the remote display.
Do it again to deactivate this function.
This function enables the remote control to
measure the temperature at its current location,
and send this signal to the air conditioner to
optimize the temperature around you and ensure
the comfort.
I FEEL
DISPLAY function (Indoor display)
DISPLAY
Switch ON/OFF the LED display on
panel.
Press DISPLAY button to switch off the LED
display on the panel. Press again to switch on the
LED display.
ECO In this mode the appliance
automatically sets the operation to
save energy.
Press the ECO button, the appears on the
display, and the appliance will run in ECO mode.
Press again to cancel it.
Note: The ECO function is available in both
COOLING and HEATING modes.
SLEEP function
SLEEP Pre-setting automatic operating
program.
After 10 hours running in sleep mode, the air
conditioner will change to the previous setting
mode.
Press SLEEP button to activate the SLEEP
function, and appears on the display.
Press again to cancel this function.
GEN function (Optional)
1. Turn on the indoor unit at first, and long press
MUTE button 3 seconds to active, and do it
again to deactivate this function.
2. Under this function, short press MUTE button
to select the General type L3 - L2 - L1 - OF.
3. Select OF and wait 2 seconds to exit it.
Reset Wi-Fi
1.Method 1: Press button DISPLAY 6 times in 8 seconds.
2.Method 2: Press button ECO 6 times in 8 seconds.
3.Method 3: Long press MODE and over 3 seconds.
You will hear 2 beeps and CF or AP will show on the
indoor display after the operation.
12
REMOTE CONTROL
SELF-CLEAN function (Optional) Gentle Wind function (Optional)
1. This function helps carry away the accumulated
dirt, bacteria, etc from the indoor evaporator.
2. This function will run about 30 minutes, and it
will return to the pre-setting mode. You can
press button to cancel this function during
the process.
You will hear 2 beeps when it's finished or
cancelled.
It's normal if there is some noise during this
function process, as plastic materials expand
with heat and contract with cold.
Health function (Optional)
8 heating function (Optional)
oC
1. Long press ECO button over 3 seconds to active
this function, and ( ) will appear on
o o
8 C 46 F
the remote display.
Do it again to deactivate this function.
2. This function will auto start the heating mode
o
when the room temperature is lower than 8 C
o
(46 F), and it will return to standby if the
o o
temperature reaches 9 C (48 F).
o
3. If the room temperature is higher than 18 C
o
(64 F), the appliance will cancel this function
automatically.
Indoor unit
Outdoor unit
o o
Temp < 86 F (30 C)
o o o o
41 F (5 C) < Temp < 86 F (30 C)
We suggest operating this function at the
following ambient conditions to avoid certain
safety protection features.
It's suggested to utilize this function every
3 months.
To active this function, turn off the indoor unit
at first, then press HEALTH button
then you will hear a beep, AC will
appear on the indoor LED, and will
appear on the remote display .
2. When the HEALTH function is initiated, the
UVC Lights(depending on models) will be
energized and running.
1. Turn on the indoor unit at first, press HEALTH
to active this function, will appear on the
display.
Do it again to deactivate it.
Fresh Air function
Continue press button until select your
desired Fresh Air fan speed or deactivate this function
as circulation Low-Mid-High-OFF, then loose button.
The following indicator will appear on the display:
Auto fan speed Low fan speed
High fan speed Mid fan speed
OFF (no indicator)
Note:
1.This function is available when in OFF/Heating
Cooling/Fan/Auto mode.
2.In OFF mode, the system may run automatically
because of the big difference of temperature
between indoor and outside.
3. If the indoor display shows the Fresh Air
indicator and shows CL. You can replace the
filter and long press button over 5
seconds to clear the indicator CL.
FRESH AIR
1. Turn on the indoor unit, and change to COOL
mode, then press GENTLE WIND button or
to active this function, will appear on
the display.
Do it again to deactivate it.
2. This function will auto close the vertical flaps,
and give you the comfortable gentle wind feeling.
FRESH
AIR
(Flash)
This function will pump the fresh air
from outside to inside
FRESH
AIR
REMOTE CONTROL
TVOC function (Optional)
The detection of TVOC is mainly aimed at various
volatile organic compounds, such as formaldehyde,
benzene, polycyclic aromatic hydrocarbons, etc.,
close to perfume, toilet water, alcohol, air freshen-
ers, etc., will also lead to an increase in the
detected TVOC concentration.
The TVOC sensor needs to be initialized every time
it is powered on, please wait patiently for about 10
minutes.
This function enable to detect some kinds of
harmful gases in the room and display the air
quality status.
If the unit is equipped with this function, when the
unit is operation, it will display the following
indicator states according to the detected concen-
tration of different harmful gases.
1. The more orange color in the circle, the worse
the air quality is (Note:the air quality detection
object is TVOC, such as polycyclic aromatic
hydrocar-bons, benzene, formaldehyde, trichl-
oroethylene, etc.).
2. All panel display lights including TVOC can be
turned off by pressing the DISPLAY button.
3.Turning on the Fresh Air function can improve
the indoor air quality, but when the outdoor air
pollution is serious, it is recommended to turn
off the Fresh Air function.
4.If the unit is not equipped with TVOC function,
it will display 100% blue when the machine is
running and the color will not change.
Depending on the brand or working principle of the
testing equipment, TVOC testing results may vary.
100% Orange 100% Blue
Poor Good
Air quality dynamic display
13
Attempt to use the air conditioner under the temperature beyond the specified range may cause
the air conditioner protection device to start and the air conditioner may fail to operate. Therefore,
try to use the air conditioner in the following temperature conditions.
OPERATION INSTRUCTIONS
14
With the power supply connected, restart the air conditioner after shutdown, or switch it to other
mode during operation, and the air conditioner protection device will start. The compressor will
resume operation after 3 minutes.
Characteristics of heating operation (applicable to Heating pump)
Preheating:
When the heating function is enabled, the indoor unit will take 2~5 minutes for preheating, after
that the air conditioner will start heating and blows warm air.
Defrosting:
During heating, when the outdoor unit frosted, the air conditioner will enable the automatic
defrosting function to improve the heating effect. During defrosting, the indoor and outdoor fans
stop running. The air conditioner will resume heating automatically after defrosting finish.
Inverter air conditioner:
0℃ ℉ ℉℃~27 (32 ~80 )
Dry
Heating Cooling
Room temperature 17 32℃(63℉~90℉)℃~
Outdoor temperature
Temperature
MODE
-20 ~24 ℃ ℃
(-4 ~75 )℉ ℉
15 ~50 (59 ~122 )℃ ℃ ℉ ℉
(Low temperature cooling:
-15 ~50 (5 ~122 ))℃ ℃ ℉ ℉
INSTRUCTIONS FOR SERVICING(R32)
1. Check the information in this manual to find out the dimensions of space needed for proper
installation of the device, including the minimum distances allowed compared to adjacent
structures.
2
2. Appliance shall be installed, operated and stored in a room with a floor area larger than 4m .
3. The installation of pipe-work shall be kept to a minimum.
4. The pipe-work shall be protected from physical damage, and shall not be installed in an
2
unventilated space if the space is smaller than 4m .
5. The compliance with national gas regulations shall be observed.
6. The mechanical connections shall be accessible for maintenance purposes.
7. Follow the instructions given in this manual for handling, installing, cleaning, maintaining and
disposing of the refrigerant.
8. Make sure ventilation openings clear of obstruction.
9. Notice: The servicing shall be performed only as recommended by the manufacturer.
10. Warning: The appliance shall be stored in a well-ventilated area where the room size corresponds
to the room area as specified for operation.
11. Warning: The appliance shall be stored in a room without continuously operating open flames
(for example an operating gas appliance) and ignition sources (for example an operating
electric heater).
12. The appliance shall be stored so as to prevent mechanical damage from occurring.
13. It is appropriate that anyone who is called upon to work on a refrigerant circuit should hold a
valid and up-to-date certificate from an assessment authority accredited by the industry and
recognizing their competence to handle refrigerants, in accordance with the assessment
specification recognized in the industrial sector concerned. Service operations should only be
carried out in accordance with the recommendations of the equipment manufacturer.
Maintenance and repair operations that require the assistance of other qualified persons must
be conducted under the supervision of the person competent for the use of flammable
refrigerants.
14. Every working procedure that affects safety means shall only be carried out by competent persons.
15. Warning:
* Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
* The appliance shall be stored in a room without continuously operating ignition sources
(for example: open flames, an operating gas appliance or an operating electric heater).
* Do not pierce or burn.
* Be aware that refrigerants may not contain an odor.
Operating instructions Read technical manual
Caution: Risk of fire
15
16. Information on servicing:
1) Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety checks are
necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating system,
the following precautions shall be complied with prior to conducting work on the system.
2) Work procedure
Work shall be undertaken under a controlled procedure so as to minimize the risk of a
flammable gas or vapor being present while the work is being performed.
3) General work area
All maintenance staff and others working in the local area shall be instructed on the nature of
work being carried out. Work in confined spaces shall be avoided. The area around the
workspace shall be sectioned off. Ensure that the conditions within the area have been made
safe by control of flammable material
4) Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work, to
ensure the technician is aware of potentially flammable atmospheres. Ensure that the leak
detection equipment being used is suitable for use with flammable refrigerants, i.e.
non-sparking, adequately sealed or intrinsically safe.
5) Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts,
appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO 2
fire extinguisher adjacent to the charging area.
6) No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any
pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or
explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently
far away from the site of installation, repairing, removing and disposal, during which refrigerant
can possibly be released to the surrounding space. Prior to work taking place, the area around
the equipment is to be surveyed to make sure that there are no flammable hazards or ignition
risks. No Smoking signs shall be displayed.
7) Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking into the
system or conducting any hot work. A degree of ventilation shall continue during the period
that the work is carried out.
The ventilation should safely disperse any released refrigerant and preferably expel it externally
into the atmosphere.
8) Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the purpose and to the
correct specification. At all times the manufacturer's maintenance and service guidelines shall
be followed.
If in doubt consult the manufacturer's technical department for assistance.
INSTRUCTIONS FOR SERVICING(R32)
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The following checks shall be applied to installations using flammable refrigerants:
-- The charge size is in accordance with the room size within which the refrigerant containing
parts are installed;
-- The ventilation machinery and outlets are operating adequately and are not obstructed;
-- If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the
presence of refrigerant;
-- Marking to the equipment continues to be visible and legible. Markings and signs that are
illegible shall be corrected;
-- Refrigeration pipe or components are installed in a position where they are unlikely to be
exposed to any substance which may corrode refrigerant containing components, unless the
components are constructed of materials which are inherently resistant to being corroded or
are suitably protected against being so corroded.
9) Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and
component inspection procedures. If a fault exists that could compromise safety, then no
electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault
cannot be corrected immediately but it is necessary to continue operation, an adequate
temporary solution shall be used. This shall be reported to the owner of the equipment so all
parties are advised.
Initial safety checks shall include:
-- That capacitors are discharged: this shall be done in a safe manner to avoid possibility of
sparking;
-- That there no live electrical components and wiring are exposed while charging, recovering
or purging the system;
-- That there is continuity of earth bonding.
17. Repairs to sealed components
1) During repairs to sealed components, all electrical supplies shall be disconnected from the
equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely
necessary to have an electrical supply to equipment during servicing, then a permanently
operating form of leak detection shall be located at the most critical point to warn of a
potentially hazardous situation.
2) Particular attention shall be paid to the following to ensure that by working on electrical
components, the casing is not altered in such a way that the level of protection is affected. This
shall include damage to cables, excessive number of connections, terminals not made to original
specification, damage to seals, incorrect fitting of glands, etc. Ensure that apparatus is mounted
securely. Ensure that seals or sealing materials have not degraded such that they no longer serve
the purpose of preventing the ingress of flammable atmospheres. Replacement parts shall be in
accordance with the manufacturer's specifications.
NOTE: The use of silicon sealant may inhibit the effectiveness of some types of leak detection
equipment. Intrinsically safe components do not have to be isolated prior to working on them.
18. Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that
this will not exceed the permissible voltage and current permitted for the equipment in use.
Intrinsically safe components are the only types that can be worked on while live in the presence
of a flammable atmosphere. The test apparatus shall be at the correct rating. Replace components
only with parts specified by the manufacturer. Other parts may result in the ignition of refrigerant
in the atmosphere from a leak.
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